Answer: Yes, the reaction of carbon solid (C) with oxygen gas (O2) to produce carbon dioxide (CO2) is indeed a chemical change. This is evident because new substances are formed during the reaction. In this case, carbon atoms from the solid carbon combine with oxygen molecules to form carbon dioxide molecules. The bonds between the carbon and oxygen atoms in the carbon dioxide molecule are different from those in the carbon solid or the oxygen gas, indicating a chemical transformation. Additionally, energy is usually released or absorbed during chemical reactions, which is also the case in this reaction as it is exothermic.
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